package com.example.intercepoter;

import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

public class MyInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        System.out.println("拦截器开始拦截....");
        HttpSession session = request.getSession();
        String user = (String) session.getAttribute("userName");
        if (user==null){
            System.out.println("条件不符合....");
            response.sendRedirect(request.getContextPath()+"/templates/login.html");
            return false;
        }
        System.out.println("条件符合....");
        return true;
    }

}
